docs: def _get_plotL(self, Lplot='Tot', proj='All', ind=None, multi=False):
          """ Get the (R,Z) coordinates of the cross-section projections """
          ind = self._check_indch(ind)
          if ind.size>0:
              Ds, us = self.D[:,ind], self.u[:,ind]
              if ind.size==1:
                  Ds, us = Ds.reshape((3,1)), us.reshape((3,1))
              kPIn, kPOut = self.kIn[ind], self.kOut[ind]
              if self.config.Id.Type=='Tor':
                  kRMin = self._dgeom['kRMin'][ind]
              else:
                  kRMin = None
              pts = _comp.LOS_CrossProj(self.config.Id.Type, Ds, us,
                                        kPIn, kPOut, kRMin, proj=proj,
                                        Lplot=Lplot, multi=multi)
          else:
              pts = None
          return pts